0394428 JOHNSON PISTON,Std. 2.6 litre

Illustration 1 g06427907
Right side view of the engine
(1) Injector 2-12
(2) Oil quality
(3) Coolant pressure inlet
(4) Coolant pressure outlet
(5) Exhaust temperature right side
Illustration 2 g06427853
Left side view of the engine
(6) CAN resistor
(7) Injector 1-11
(8) Exhaust temperature left side
(9) Low oil level
(10) Engine speed #1 crankshaft
(11) Engine oil pressure
(12) Electronic control module (ECM)
Illustration 3 g06427843
Top view of the engine
(13) Fuel pressure after filter
(14) Fuel pressure inlet
(15) Fuel temperature
(16) Barometric pressure
(17) Engine speed #2 camshaft
(18) Intake manifold pressure right side #2
(19) Intake manifold temperature right side #2
(20) Intake manifold temperature left side #1
(21) Intake manifold pressure left side #1
(22) Coolant temperatureThe C32 engines utilize an Electronic Unit Injectors (EUI) fuel system. Electronic controls provide increased control of the timing and increased control of the fuel injection pressure. The timing advance is achieved by precise control of the unit injector timing. Engine speed is controlled by adjusting the injection duration. A special speed-timing wheel provides information to the Electronic Control Module (ECM) for detection of cylinder position and engine speed.These engines are also equipped with an NRS system, which recirculates a portion of cooled exhaust gas into the combustion chamber. The amount of exhaust gas that is recirculated depends on the following conditions: exhaust gas temperature and engine loadThe advancements in technology offer the following benefits: enhanced engine efficiency, reduced smoke levels, and lower exhaust emissions.The engine has built-in diagnostics to ensure that all the components are operating properly. In the event of a system component failure, the operator will be alerted to the condition via the diagnostic lamp that is on the control panel. Caterpillar Electronic Technician (Cat ET) can be used to read the numerical code of the faulty component or condition. Intermittent faults are also logged and stored in memory.Starting the Engine
The engine ECM will automatically provide the correct amount of fuel to start the engine. Do not hold the throttle down while the engine is cranking. If the engine fails to start in 20 seconds, release the starting switch. Allow the starting motor to cool for 2 minutes before using the starting motor again.
Excessive ether (starting fluid) can cause piston and ring damage. Use ether for cold weather starting purposes only.
Cold Mode Operation
Starting the engine and operation in cold weather depends on the type of fuel used, the oil viscosity, and other optional starting aids. For more information, refer to the Operation and Maintenance Manual, "Cold-Weather Operation".The Cold Mode flag in Caterpillar Electronic Technician (ET) indicates that the engine system is compensating with a cold mode strategy.Some examples of a cold mode strategy may include:
Elevated RPM
Timing enhancements
Fuel injection enhancementsTroubleshooting performance-related problems when Cold Mode is active is not recommended.The Cold Mode flag will activate in the following conditions:
Coolant temperature is less than 20° C (68° F)
Coolant temperature is less than 40° C (104° F) and NRS gas temperature is less than 40° C (104° F)
Coolant temperature is less than 80° C (176° F) and NRS gas temperature is less than 35° C (95° F)Once coolant temperature is above 80° C (176° F) regardless of NRS gas temperature, no cold mode strategy will be active.Customer Specified Parameters
The engine can be programmed for several customer specified parameters. For a brief explanation of each of the customer specified parameters, refer to the Operation and Maintenance Manual for your engine.